OK, seit einigen Wochen neu in Java, aber seit 30 Jahren programmierend. Der folgende Code wird ausgeführt, aber nur die erste Spalte zeigt etwas an. Das Datenobjekt zeigt mehrere Datenzeilen mit ausgefüllten Datenfeldern an. Ich bin sicher, dass mir etwas fehlt, und habe hier ähnliche Fragen durchgesehen.

APVoucher_batchgridController.java

import java.net.URL;
import java.util.ResourceBundle;
import javafx.event.ActionEvent;
import javafx.fxml.Initializable;
import javafx.fxml.FXML;
import javafx.scene.control.TableView;
import javafx.scene.input.MouseEvent;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.logging.Level;
import java.util.logging.Logger;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.scene.control.TableColumn;
import javafx.scene.control.cell.PropertyValueFactory;

/**
 * FXML Controller class
 *
 * @author kmitchell
 */
public class APVoucher_batchgridController implements Initializable {

    public TableView tblMainList;
    public TableColumn colDateEntered;
    public TableColumn colCreatedBy;
    public TableColumn colDescription;

    /**
     * Initializes the controller class.
     */
    @Override
    public void initialize(URL url, ResourceBundle rb) {

    }

    @FXML
    public void opentables(ActionEvent event) {

        Object forName = null;
        Connection conn = null;
        Statement stmt = null;

        ResultSet rs = null;

        colDateEntered.setCellValueFactory(new PropertyValueFactory<sresult, String>("DateEntered"));

        colDescription.setCellValueFactory(new PropertyValueFactory<sresult, String>("cDesc"));

        colCreatedBy.setCellValueFactory(new PropertyValueFactory<sresult, String>("CreatedBy"));

        try {
            // load the driver into memory
            forName = Class.forName("jstels.jdbc.dbf.DBFDriver2");

        } catch (ClassNotFoundException ex) {
            Logger.getLogger(APVoucher_batchgridController.class.getName()).log(Level.SEVERE, null, ex);
        }

        try {
            conn = DriverManager.getConnection("jdbc:jstels:dbf:e:\\keystone-data\\keyfund\\seymour\\keyfund.dbc");
        } catch (SQLException ex) {
            Logger.getLogger(APVoucher_batchgridController.class.getName()).log(Level.SEVERE, null, ex);
        }

        if (conn != null) {
            try {
                stmt = conn.createStatement();
            } catch (SQLException ex) {
                Logger.getLogger(APVoucher_batchgridController.class.getName()).log(Level.SEVERE, null, ex);
            }

            if (stmt != null) {

                // execute a query
                try {
                    ObservableList<Object> data = FXCollections.observableArrayList();

                    rs = stmt.executeQuery("SELECT denteredon, cdesc, ccreatedby FROM apvbatch WHERE ldeleted = false ORDER BY denteredon DESC");

                    while (rs.next()) {

                        String enteredon = rs.getString("denteredon");
                        String desc = rs.getString("cdesc");
                        String createdby = rs.getString("ccreatedby");

                        sresult row = new sresult(createdby, enteredon, desc);

                        data.add(row);
                    }

                    tblMainList.setItems(data);

                    tblMainList.setVisible(true);


                } catch (SQLException ex) {
                    Logger.getLogger(APVoucher_batchgridController.class.getName()).log(Level.SEVERE, null, ex);
                }
            }
        }
    }

    public class sresult {

        private String DateEntered;
        private String EnteredBy;
        private String cDesc;

        public sresult(String T, String d, String c) {
            this.EnteredBy = T;
            this.DateEntered = d;
            this.cDesc = c;
        }

        public String getEnteredBy() {
            return EnteredBy;
        }

        public void setEnteredBy(String T) {
            EnteredBy = T;
        }

        public String getDateEntered() {
            return DateEntered;
        }

        public void setDateEntered(String d) {
            DateEntered = d;
        }

        public String getcDesc() {
            return cDesc;
        }

        public void setcDesc(String c) {
            cDesc = c;
        }
    }
}

und APVoucher_batchgrid.fxml

<?xml version="1.0" encoding="UTF-8"?>

<?import java.lang.*?>
<?import java.net.*?>
<?import java.util.*?>
<?import javafx.geometry.*?>
<?import javafx.scene.*?>
<?import javafx.scene.control.*?>
<?import javafx.scene.layout.*?>
<?import javafx.scene.text.*?>

<AnchorPane id="AnchorPane" fx:id="batchlistform" prefHeight="400.0" prefWidth="600.0" styleClass="mainFxmlClass" xmlns:fx="http://javafx.com/fxml/1" xmlns="http://javafx.com/javafx/2.2" fx:controller="keystone.APVoucher_batchgridController">
  <children>
    <BorderPane layoutX="0.0" layoutY="0.0" prefHeight="400.0" prefWidth="600.0">
      <center>
        <AnchorPane prefHeight="-1.0" prefWidth="-1.0">
          <children>
            <Pane layoutX="0.0" layoutY="0.0" prefHeight="53.0" prefWidth="580.0">
              <children>
                <Label layoutX="7.0" layoutY="9.0" prefWidth="202.0" text="AP Vouchers Batch List">
                  <font>
                    <Font name="System Bold" size="14.0" />
                  </font>
                </Label>
                <Button fx:id="btnClose" cancelButton="true" layoutX="513.0" layoutY="27.0" mnemonicParsing="false" text="Close" />
                <Button id="btnClose" fx:id="apvRefresh" cancelButton="true" layoutX="185.0" layoutY="27.0" mnemonicParsing="false" onAction="#opentables" text="Refresh" />
              </children>
            </Pane>
            <TableView fx:id="tblMainList" layoutX="0.0" layoutY="53.0" prefHeight="323.0" prefWidth="580.0">
              <columns>
                <TableColumn maxWidth="5000.0" minWidth="10.0" prefWidth="91.0" text="Date Entered" fx:id="colDateEntered" />
                <TableColumn maxWidth="5000.0" minWidth="10.0" prefWidth="100.0" text="Created By" fx:id="colCreatedBy" />
                <TableColumn maxWidth="5000.0" minWidth="10.0" prefWidth="261.0" text="Description" fx:id="colDescription" />
              </columns>
            </TableView>
          </children>
        </AnchorPane>
      </center>
      <padding>
        <Insets bottom="10.0" left="10.0" right="10.0" top="10.0" />
      </padding>
    </BorderPane>
  </children>
  <stylesheets>
    <URL value="@apvoucher_batchgrid.css" />
  </stylesheets>
</AnchorPane>

Danke für die Antwort. Viel zu viele Jahre bei unsensiblen Sprachen. Dies war eine schnelle und schmutzige Übung für mich, um Java und die neuesten und besten Dinge zu lernen, oder wie ich gerne sage, New Exciting Technology (NExT!)

Für alle, die sich die Antwort ansehen und immer noch keine Ahnung haben, sind hier die Änderungen, die den Code ordnungsgemäß funktionieren ließen.

colDateEntered.setCellValueFactory(new PropertyValueFactory<sresult, String>("Denteredon"));
colDescription.setCellValueFactory(new PropertyValueFactory<sresult, String>("CDesc"));
colEnteredBy.setCellValueFactory(new PropertyValueFactory<sresult, String>("Ccreatedby"));


    public class sresult {

        private String Denteredon;
        private String Ccreatedby;
        private String CDesc;

        public sresult(String T, String d, String c) {
            this.Ccreatedby = T;
            this.Denteredon = d;
            this.CDesc = c;
        }

        public String getCcreatedby() {
            return Ccreatedby;
        }

        public void setCreatedby(String T) {
            Ccreatedby = T;
        }

        public String getDenteredon() {
            return Denteredon;
        }

        public void setDenteredon(String d) {
            Denteredon = d;
        }

        public String getCDesc() {
            return CDesc;
        }

        public void setCDesc(String c) {
            CDesc = c;
        }
    }
}